Category: Hardware
Product Number: AD9139
Hi，
When using the AD9139 DAC chip with a 1 GHz clock and providing 500 MHz DDR input data, enabling the inv sinc filter results in a problematic output waveform. The observed output deviates significantly from the expected signal, displaying a repetitive signal with a 4ns period on the oscilloscope, instead of the intended sinusoidal waveform. This issue is persistent across various input signals. Notably, the problem does not occur when the inv sinc filter is disabled. Seeking assistance on the Analog Devices forum to address this specific behavior.
